Eevee is a Normal-type Pokémon introduced in Generation I, and is categorized within the Pokédex at #133 as the "Evolution Pokémon". It is notable for having the highest number of possible evolutions of all Pokémon: three starting in Generation I (the water type Vaporeon, the electric type Jolteon and the fire type Flareon) five starting in Generation II (The psychic type Espeon and the dark type Umbreon), seven starting in Generation IV (The grass type Leafeon and the ice type Glaceon) and eight starting in Generation VI (The fairy type Slyveon). It is very rare, and in most games it is given as a gift instead of being found in the wild. Eevee is a mascot in Pokémon.

Take Down is a Normal-type move with 90 base power and 85% accuracy which deals to the user 1/4 of the damage inflicted as recoil. Eevee can learn it by level-up in every game. Beedrill in SSB, Unown in Melee, and Gogoat in SSB4 also share this move in their respective games.

As adaptable a Pokémon as any yet discovered, Eevee's evolutionary progress changes to meet the conditions of its environment. So far, five evolutionary forms have been discovered and then catalogued for this unique Pokémon; Vaporeon, Jolteon, Flareon, Espeon, and Umbreon. All evolutions have special benefits.

This Normal-type Pokémon is as adaptable to evolution as they come, with eight evolutions discovered thus far. If you pair that potential with its adorable features, it's no wonder Eevee is so popular! In Smash Bros., Eevee will attack a nearby opponent with Take Down. Sadly, this attack isn't incredibly powerful.

This adorable Normal-type Pokémon's ability to evolve in so many different ways makes it a popular choice with trainers. When brought out in battle, Eevee uses Take Down on the first opponent it sees, but...it's not very effective. Never mind. Eevee may not be the toughest Pokémon, but it'll always be one of the cutest.

In Eeeve's Spirit Battle, the player has to fight a blue Yoshi who starts off the battle with a Poké Ball containing Eevee, a yellow Yoshi (which appears after a certain amount time) who starts off with a Screw Attack, and a red Yoshi (which appears shortly after the yellow one is defeated) who starts off with a Super Leaf and a Superspicy Curry. All of them also start off with one Super Leaf each.

The three of them represent Eevee's evolutions in Pokémon's first generation, being Vaporeon, Jolteon, and Flareon respectively.